The Best 3-Week (21-Day) Tours in Southeast Asia

Southeast Asia

Ready for a 21-day journey to Southeast Asia that combines relaxation, adventure, and cultural discovery? We've combed through a wide range of multi-day guided tours, meticulously analyzing them based on service, price, guest ratings, and activities. These 3-week tours to Southeast Asia are the absolute best based on these criteria, so that your trip planning can be easy and fun. They offer the perfect balance between a leisurely holiday and thrilling escapades, allowing you to immerse yourself in the essence of each destination for a full three weeks! From exploring famous landmarks to savoring the local cuisine, every activity on these guided tours is designed to provide an enriching and unforgettable experience. Get ready to embark on the adventure of a lifetime and make the most of your epic escape with one of these amazing tours below.


The Top 3:

  • 21 Days, $2479.00

  • 20 Days, $3055.00

  • 20 Days, $3559.00

Which 21-day tour options are available in Southeast Asia?

Southeast Asia

Here are the important factors:

  • 43 trip options analyzed
  • $131 average price per day (USD)
  • 20 to 21 days in length
  • 4.73 of 5 average rating
  • 17 people or less on average

You'll be surprised at the array of tours lasting 3 weeks in Southeast Asia, as there is something for everyone. It's no wonder that visitors can't get enough of these tours, boasting an impressive average guest rating of 4.73 out of 5 stars. Picture yourself joining a group of like-minded adventurers, with an average maximum size of 17 people, ensuring a fantastic blend of social and personalized experiences. The average tour length spans 20 days, with tours ranging from 20 to 21 days long. For physical activity, you'll find tours classified as easy, moderate, relaxing, and serious, with most of them being easy. With our thorough analysis of 43 tours lasting 3 weeks, we've found the best. So rest assured that Southeast Asia has something to captivate every kind of traveler.

(All tour prices are in US Dollars before taxes, and come from a base price that is reported by TourRadar. Peak season prices can vary significantly, particularly in destinations where seasonal travel fluctuates dramatically.)

So, let's get to it and see...

The 10 Best 3-Week Tours in Southeast Asia
  • Great Value: the daily price is lower than average for tours lasting 3 weeks.
  • High Quality: guest ratings are higher than average.
by Bravo Indochina Tours



21 Days Hanoi to Phuket 10 Destinations through Vietnam, Cambodia, Thailand 15 People at Most Ages 1 to 99 Guest Rating: 4.9 out of 5 stars

This fantastic journey has a rating of 4.9 out of 5 stars, visiting Vietnam, Cambodia, and Thailand. Along the way, this journey encompasses 10 destinations, including Halong Bay, Hoi An, Ho Chi Minh City, and Mekong Delta. Your journey will begin in Hanoi and end in Phuket. Lasting 21 days, the maximum group size is 15 people, and it's good for guests of all ages. Organized by Bravo Indochina Tours, this is a great deal because it's only $118 per day.

  • Sightseeing
  • Family
$2,479
TourRadar
  • High Quality: guest ratings are higher than average.
by Swallow Travel



20 Days Ho Chi Minh City to Luang Prabang 13 Destinations through Vietnam, Cambodia, Laos 12 People at Most Ages 1 to 88 Guest Rating: 5.0 out of 5 stars

With a stellar 5 out of 5 rating, this extraordinary journey, visiting Vietnam, Cambodia, and Laos, is the perfect choice. Rest assured, this trip is all about local culture and family-friendly activities, guaranteeing an unforgettable adventure. This itinerary covers 13 captivating destinations, with stops in Hanoi, Halong Bay, Siem Reap, and Angkor Wat, among others. Begin your trip in Ho Chi Minh City and complete it with a memorable finale in Luang Prabang. Spanning across 20 days, the journey accommodates 12 individuals, and is suitable for guests age 1 to 88. Offered by Swallow Travel, this remarkable journey is priced at just $153 per day. Don't miss out on this incredible experience.

  • Sightseeing
  • In-depth Cultural
  • Family
$3,055
TourRadar
  • High Quality: guest ratings are higher than average.
by VietLong Travel



20 Days Ho Chi Minh City to Hanoi 15 Destinations 20 People at Most Ages 2 to 80 Guest Rating: 5.0 out of 5 stars

This exceptional trip offering by VietLong Travel has received a 5 out of 5 rating. On this 20-day trip you can unwind while also making new memories. Immerse yourself in a travel experience that includes 15 destinations, featuring Tay Ninh, Mekong Delta, Dalat, and Phan Rang. Your journey starts off in Ho Chi Minh City and finishes in Hanoi. With a group size of 20 people, it's suitable for guests age 2 to 80. This extraordinary adventure also revolves around local culture and family-friendly activities. This remarkable trip is priced at an unbeatable $178 per day.

  • Sightseeing
  • In-depth Cultural
  • Family
$3,559
TourRadar
  • On Sale: 40% Off
  • High Quality: guest ratings are higher than average.
by Hoi An Express



21 Days Bangkok to Angkor Wat 13 Destinations through Thailand, Laos, Vietnam, Cambodia 15 People at Most Ages 1 to 99 Guest Rating: 4.8 out of 5 stars

Check out this journey that has received rave reviews, earning a stellar 4.8 out of 5 rating, visiting Thailand, Laos, Vietnam, and Cambodia. Uncover the beauty of 13 destinations on this itinerary, with highlights such as Hanoi, Da Nang, Ho Chi Minh City, and My Tho. Your journey will begin in Bangkok and end in Angkor Wat. This terrific trip also highights local culture and family-friendly activities. Spanning across 21 unforgettable days, this voyage offers an intimate group experience with 15 participants, and it's great for guests of all ages. Brought to you by the renowned Hoi An Express, this exceptional opportunity is priced at an incredible $148 per day - an unbeatable value. Don't miss out on this limited-time sale.

  • Coach / Bus
  • In-depth Cultural
  • Family
$5,172 $3,103
TourRadar
  • On Sale: 35% Off
  • Great Value: the daily price is lower than average for tours lasting 3 weeks.
by G Adventures



20 Days Bangkok to Hanoi 12 Destinations through Thailand, Cambodia, Vietnam 18 People at Most Ages 18 to 39 Guest Rating: 4.6 out of 5 stars

This 20-day voyage, visiting Thailand, Cambodia, and Vietnam, is ideal for guests age 18 to 39. And priced at only $55 per day, it's a great value, too. Traverse through 12 enchanting destinations, with Phong Nha-Kẻ Bàng National Park, Hanoi, Siem Reap, and Phnom Penh among the must-see stops along the route. Begin your trip in Bangkok and complete it with a memorable finale in Hanoi. It's offered by G Adventures, a very popular company with rave reviews and knowledgeable guides. It's also on sale right now!

  • In-depth Cultural
$1,699 $1,104
TourRadar
  • Great Value: the daily price is lower than average for tours lasting 3 weeks.
  • High Quality: guest ratings are higher than average.
by G Adventures



21 Days Bangkok to Ho Chi Minh City 13 Destinations through Thailand, Vietnam 18 People at Most Ages 18 to 39 Guest Rating: 5.0 out of 5 stars

Priced at just $73 per day, this terrific 21-day voyage, visiting Thailand and Vietnam, is ideal for guests age 18 to 39. This trip visits 13 destinations, including Hoi An, Quy Nhon, Nha Trang, and Mui Ne along the way. Your journey starts off in Bangkok and finishes in Ho Chi Minh City. Organized by the reputable G Adventures, this is one of the best tours on this list.

  • Historical
$1,537
TourRadar
  • On Sale: 25% Off
  • Great Value: the daily price is lower than average for tours lasting 3 weeks.
by G Adventures



21 Days Bangkok to Singapore 10 Destinations through Thailand, Malaysia, Singapore 18 People at Most Ages 18 to 39 Guest Rating: 4.7 out of 5 stars

Check out this incredible trip that has received a 4.7 out of 5 rating from previous guests, visiting Thailand, Malaysia, and Singapore. With a duration of 21 days, this journey ensures an intimate group size of 18 people, and is good for guests age 18 to 39. Experience a trip that takes you to 10 remarkable destinations, including Kuala Lumpur, Malacca, Chiang Mai, and Surat Thani. Your journey will begin in Bangkok and end in Singapore. This fantastic option, organized by G Adventures, presents an unbeatable value at just $80 per day. Act fast to take advantage of the current sale.

  • In-depth Cultural
$2,249 $1,687
TourRadar
by Explore!



21 Days Hanoi to Siem Reap 14 Destinations through Vietnam, Cambodia 16 People at Most Ages 16 to 85 Guest Rating: 4.6 out of 5 stars

Spanning over 21 days, this trip, visiting Vietnam and Cambodia, has a maximum size of 16 individuals. Welcoming guests age 16 to 85, it is organized by Explore!, a very popular company with plenty of great reviews. Explore 14 incredible locations on this trip, including Binh Hoa Phuoc, Phnom Penh, Siem Reap, and Tonle Sap Lake. Begin your trip in Hanoi and complete it with a memorable finale in Siem Reap. Available at an unbeatable price of only $160 per day, this option also has a rating of 4.6 out of 5 stars from previous guests.

  • Hiking & Trekking
  • In-depth Cultural
  • Walking Tour
$3,360
TourRadar
  • High Quality: guest ratings are higher than average.
by On The Go Tours



21 Days Vientiane to Siem Reap 15 Destinations through Laos, Vietnam, Cambodia 24 People at Most Ages 5 to 99 Guest Rating: 5.0 out of 5 stars

Here's your chance to take off on an exceptional journey, visiting Laos, Vietnam, and Cambodia, that has garnered a 5 out of 5 rating. With a duration of 21 days, this jouney will have 24 participants, and it warmly welcomes guests age 5 and older. Rest assured, this trip is all about local culture and family-friendly activities, guaranteeing an unforgettable adventure. Expertly organized by On The Go Tours, this amazing trip is an incredible value at just $177 per day.

  • In-depth Cultural
  • Historical
  • Family
$3,715
TourRadar
  • On Sale: 50% Off
  • Great Value: the daily price is lower than average for tours lasting 3 weeks.
  • High Quality: guest ratings are higher than average.
by Vietnam Tour Fun



20 Days Hanoi to Cu Chi 10 Destinations 15 People at Most Ages 1 to 99 Guest Rating: 5.0 out of 5 stars

This memorable voyage is offered by Vietnam Tour Fun which has received plenty of positive reviews. The trip itself has a guest rating of 5 out of 5 stars, and is priced affordably at $99 per day. This trip takes you on an adventure to 10 destinations, including Ninh Binh, Halong Bay, Hue, and Hoi An. Your journey will begin in Hanoi and end in Cu Chi. This extraordinary adventure also revolves around local culture and family-friendly activities. The maximum group size is 15 people, welcoming guests of all ages. Take advantage of the current sale and secure your spot today!

  • In-depth Cultural
  • Family
$3,235 $1,618
TourRadar

See also The Best Family-Friendly Tours to Southeast Asia, The Best Wildlife Tours to Southeast Asia, The Best Hiking & Trekking Tours in Southeast Asia, The Best Historical Tours in Southeast Asia, The Best 10-Day Tours in Southeast Asia, The Best One Week (7-Day) Tours in Southeast Asia, The Best 3-Day Tours in Southeast Asia, The Best 2-Week Tours in Southeast Asia, The Best 4-Week (1-Month) Tours in Southeast Asia, The Best Extended Trip Tours in Southeast Asia, One Month or Longer, The Best River Cruises in Southeast Asia, The Best Bicycle Tours in Southeast Asia, Tours for Outdoor and Nature Lovers in Southeast Asia, The Best Christmas & New Years Tours in Southeast Asia, The Best Coach Bus Tours in Southeast Asia, The Best Adventure Tours to Southeast Asia, The Best Eco Tours in Southeast Asia, The Best Train & Rail Tours in Southeast Asia, The Best Thrill-Seeking Tours in Southeast Asia, The Best Cruise Tours and Packages in Southeast Asia, The Best Water Sports Tour Packages in Southeast Asia, The Best White Water Rafting Tours in Southeast Asia, The Best Sightseeing Tours in Southeast Asia, The Best Cultural Tours in Southeast Asia, The Best Food and Culinary Tours in Southeast Asia, The Best Music Tours in Southeast Asia, The Tours for Animal Lovers in Southeast Asia, The Best Volunteering Tours in Southeast Asia, The Best Camping Tours in Southeast Asia, The Best Romantic Tours for Couples in Southeast Asia, The Best Safaris in Southeast Asia, The Best Budget Safaris in Southeast Asia, The Best Nightlife Tours in Southeast Asia, The Best Religious Tours in Southeast Asia, The Best Yoga Tours and Retreats in Southeast Asia, The Best Walking Tours in Southeast Asia, The Best Honeymoon Tours in Southeast Asia, The Best Jungle Trekking Tours in Southeast Asia, The Best Tours Under $1000 in Southeast Asia, The Best Luxury Tours to Southeast Asia, The Best Budget Tours to Southeast Asia, The Best Tours for Seniors to Southeast Asia, The Best Contiki Tours to Southeast Asia, or The Best G Adventures Tours to Southeast Asia for more tour ideas. With so many options, there's a guided tour or vacation package for every type of traveler.

How much do 21-day tours to Southeast Asia cost?

Average Daily Price 3-Week Tours
$131

Visitors will find a large range of terrific options for tours lasting 3 weeks when planning a visit to Southeast Asia. The price of these specific trips can vary according to length, destinations, and travel style. The average price of tours lasting 3 weeks in Southeast Asia based on data from 43 options is an affordable $131 per day. If you're interested in more information about tours here, see our guide to tour prices in Southeast Asia.


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